Rexroth 4WRKE Valve | 4WRKE35W6-1000L | 4WRKE32W6-700L | 3X Series | High Flow Proportional Valve

Rexroth 4WRKE32/35 High-Flow Pilot-Operated Proportional Valves

Product Overview:

The Bosch Rexroth 4WRKE32 and 4WRKE35 series are the ultimate solutions for achieving precise control over massive hydraulic flow rates. As two-stage pilot-operated proportional directional valves with Integrated On-Board Electronics (OBE), they are specifically engineered for high-accuracy regulation of actuator displacement, velocity, and direction. In 2026, whether in NG32 or NG35 sizes, the 4WRKE series remains the industry benchmark for heavy-duty extruders, ultra-large injection molding machines, and steel rolling mills, offering flow capacities up to 1000 L/min with unrivaled closed-loop precision.

Featured models: 4WRKE35W6-1000L-3X and 4WRKE32W6-700L-3X.

Key Technical Advantages:

• Ultra-High Flow Capacity: Designed for high-power systems, the NG35 size supports a nominal flow rate of 1000 L/min, ensuring rapid response for heavy-duty loads.

• Integrated OBE Digital Electronics: Proportional amplifiers are factory-mounted and pre-calibrated, supporting standard A1 ($\pm 10\text{V}$) command inputs. This integrated design maximizes cabinet space while ensuring superior EMC performance.

• Closed-Loop Spool Feedback: Internal LVDT sensors monitor the main spool position in real-time, reducing hysteresis to minimal levels and ensuring flow output remains independent of load fluctuations.

• Optimized Series 3X Design: Utilizing the latest 3X sequence, internal channels are optimized to reduce pressure drop at high flow rates, significantly enhancing overall system energy efficiency.

• EK31/K31 Advanced Configuration: The EK31 designation typically indicates enhanced electrical protection or specific diagnostic capabilities, ideal for environments with intense vibration or heat.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • 4WRKE35W6-1000L-3X: Size NG35, W6-spool logic, 1000 L/min rated flow.

  • 4WRKE32W6-700L-3X: Size NG32, W6-spool logic, 700 L/min rated flow.

• Technical Specifications:

  • Max Operating Pressure: 350 bar (Ports P, A, B).

  • Supply Voltage: 24V DC (G24).

  • Command Signal: $\pm 10\text{V}$ (A1D3M interface).

  • Protection Class: IP65 rated.